{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Airway resistance ( Raw ) were measured by the forced oscillation technique , histological studies were evaluated by The hematoxylin and eosin ( HE ) staining , Th1 / Th2 and Th17 cytokines were evaluated by enzyme - linked immunosorbent assay ( ELISA ) , and CD4 ( + ) CD25 ( + ) Foxp3 ( + ) regulatory T cells ( Tregs ) was evaluated by Flow Cytometry ( FCM ) , the forkhead / winged helix transcription factor ( Foxp3 ) was evaluated by western blotting ."}
{"Chemical": ["hematoxylin", "eosin"]}